A sealed mixing mechanism for a milk frother

Abstract

The utility model provides a sealed stirring mechanism for milk making machine relates to milk making machine technical field, including milk powder box, bottom seal and stirring shaft, the top surface of milk powder box is equipped with the powder storage groove, the bottom surface of milk powder box is equipped with stirring transmission groove, be provided with first communication between stirring transmission groove and powder storage groove Department, bottom seal is sealed and is arranged in stirring transmission groove, be provided with the second communication of coaxial distribution with first communication on bottom seal, the upper portion rotation is connected on first communication of stirring shaft, and sealed setting has upper seal structure between stirring shaft and first communication, the upper end of stirring shaft extends to powder storage groove in first communication, the lower portion rotation is connected on second communication of stirring shaft, sealed setting has lower seal structure between stirring shaft and second communication, the lower end of stirring shaft passes through second communication and realizes the rotation of stirring shaft with the cooperation of the drive component on the machine body. The utility model has the advantages of convenient with the whole milk powder box is thrown into water and is directly cleaned, improves the convenience of cleaning and use.

Description

Technical Field

[0001] This utility model relates to the field of milk maker technology, and more specifically, to a sealed stirring mechanism for a milk maker. Background Technology

[0002] A formula maker is a household appliance that can automatically dispense formula powder, control water temperature, and prepare formula. It is widely used for preparing infant formula.

[0003] Currently, common milk powder makers on the market use stirring mechanisms, such as the screw-type powder dispensing sealing mechanism and powder maker disclosed in Chinese patent CN119405183A. Their transmission components are installed inside the mounting cavity of the powder box assembly. The overall transmission structure is relatively complex, with many parts, complicated assembly, high cost, and low transmission efficiency. Furthermore, the first transmission component is directly rotatably connected to the bottom of the mounting cavity, and the guide impeller is directly rotatably connected to the top of the mounting cavity. Due to the rotation gaps on the upper and lower sides of the mounting cavity, water can easily flow into the mounting cavity during cleaning, accelerating the rusting or aging of the transmission components. This ultimately affects the normal operation and service life of the transmission components. Consequently, only the powder storage cavity of the powder box assembly can be wiped or lightly rinsed; the entire powder box assembly cannot be directly immersed in water for cleaning, making cleaning troublesome and incomplete. Utility Model Content

[0004] The technical problem this invention aims to solve is that the existing milk powder maker's stirring mechanism has a complex structure, rotation gaps, and is inconvenient to clean. Furthermore, water can easily flow into the installation cavity during cleaning, affecting the normal operation of the transmission components. To overcome these shortcomings of the prior art, this invention provides a method that provides an upper sealing structure and a lower sealing structure on the upper and lower sides of the stirring transmission groove, respectively, achieving a double sealing effect. This allows the entire milk powder box to be easily immersed in water for cleaning, preventing water from entering the stirring transmission groove during cleaning and improving the convenience of cleaning and use.

[0005] To achieve the purpose of this utility model, the following technical solution is adopted:

[0006] A sealing and stirring mechanism for a formula maker includes a formula powder container, a bottom seal, and a stirring shaft. The top surface of the formula powder container has a powder storage tank; the bottom surface of the formula powder container has a stirring transmission groove; a first connecting portion is provided between the stirring transmission groove and the powder storage tank; the bottom seal is sealed within the stirring transmission groove; a second connecting portion is provided on the bottom seal, coaxially distributed with the first connecting portion; the upper part of the stirring shaft is rotatably connected to the first connecting portion, and an upper sealing structure is provided between the stirring shaft and the first connecting portion; the upper end of the stirring shaft extends through the first connecting portion into the powder storage tank; the lower part of the stirring shaft is rotatably connected to the second connecting portion, and a lower sealing structure is provided between the stirring shaft and the second connecting portion; the lower end of the stirring shaft passes through the second connecting portion and cooperates with a drive assembly on the machine body to achieve rotation of the stirring shaft. This mechanism seals the first connecting portion and the stirring shaft through the upper sealing structure and seals the second connecting portion and the stirring shaft through the lower sealing structure, preventing water from flowing into the stirring transmission groove during cleaning and affecting normal internal operation. It also allows the entire formula powder container to be directly immersed in water for cleaning, improving the convenience of cleaning and use.

[0007] Preferably, the upper sealing structure includes an upper oil seal sleeved on the stirring shaft; the stirring shaft is rotatably fitted within the first connecting portion via the upper oil seal, and the inner peripheral wall of the upper oil seal is in a sealing fit with the stirring shaft, and the outer peripheral wall of the upper oil seal is in a sealing fit with the first connecting portion. The upper oil seal provides a good sealing effect, preventing water from flowing from the first connecting portion into the stirring transmission groove.

[0008] Preferably, the upper sealing structure further includes an upper oil seal fixing block sleeved on the stirring shaft; the upper oil seal is fixedly limited within the first connecting portion by the upper oil seal fixing block, the upper oil seal fixing block is positioned within the first connecting portion, and the outer peripheral wall of the upper oil seal fixing block is in sealing fit with the inner peripheral wall of the first connecting portion, and the inner peripheral wall of the upper oil seal fixing block is in sealing fit with the stirring shaft. The upper oil seal is limited by the upper oil seal fixing block, and the upper oil seal achieves a good sealing effect, preventing water from flowing from the first connecting portion into the stirring transmission groove.

[0009] Preferably, the upper sealing structure further includes an upper sealing ring. The upper oil seal fixing block, the upper oil seal, and the upper sealing ring are sequentially fitted onto the stirring shaft from bottom to top. The outer peripheral wall of the upper sealing ring is in a sealing fit with the first connecting part, and the inner peripheral wall of the upper sealing ring is in a sealing fit with the stirring shaft. The lower sealing structure is identical in structure to the upper sealing structure and is symmetrically arranged. The upper sealing ring further enhances the sealing effect based on the upper oil seal, further ensuring sealing performance and preventing water from entering during cleaning.

[0010] Preferably, the first connecting portion is in the form of a stepped circular hole, and includes a first stepped hole, a second stepped hole, and a third stepped hole with decreasing diameters from bottom to top; the upper oil seal fixing block is fixedly disposed in the first stepped hole, and a first limiting ring groove is provided circumferentially on the inner peripheral wall of the first stepped hole; a first limiting protrusion is provided circumferentially on the outer peripheral wall of the upper oil seal fixing block to cooperate with the first limiting ring groove, and the outer peripheral wall of the upper oil seal fixing block is sealed to the inner peripheral wall of the first stepped hole. The upper oil seal fixing block has an inner peripheral wall that seals against the outer peripheral wall of the stirring shaft. The upper oil seal and upper sealing ring are fixedly positioned within the second stepped hole, with their outer peripheral walls sealing against the inner peripheral wall of the second stepped hole. The inner peripheral walls of the upper oil seal and upper sealing ring also seal against the outer peripheral wall of the stirring shaft. The bottom surface of the upper oil seal abuts against the top surface of the upper oil seal fixing block, and the top surface of the upper sealing ring abuts against the stepped surface of the second stepped hole. The stirring shaft is rotatably connected to the third stepped hole. The first stepped hole facilitates engagement with the upper oil seal fixing block and also helps to confine the upper oil seal and upper sealing ring within the second stepped hole, ensuring the connection and reliability of the upper oil seal fixing block, upper oil seal, and upper sealing ring. It also facilitates the engagement of the upper oil seal and upper sealing ring with the second stepped hole to achieve a good sealing effect.

[0011] Preferably, the lower sealing structure includes a lower oil seal sleeved on the stirring shaft; the lower oil seal is confined within the second connecting portion, and the stirring shaft is rotatably engaged within the second connecting portion via the lower oil seal, with the inner peripheral wall of the lower oil seal sealingly engaged with the stirring shaft, and the outer peripheral wall of the lower oil seal sealingly engaged with the second connecting portion. The lower oil seal further achieves a sealing effect on the second connecting portion, preventing water from flowing into the stirring transmission groove from the bottom seal during cleaning.

[0012] Preferably, the stirring transmission groove has an installation step along its circumferential direction at the opening; the bottom seal has a positioning protrusion along its circumferential direction at the bottom, which positions and engages with the installation step; the inner circumferential wall of the stirring transmission groove has several connecting blocks along its circumferential direction; the outer circumferential wall of the bottom seal has connecting grooves along its circumferential direction, which engage with the connecting blocks; the outer circumferential wall of the bottom seal has at least one sealing ring groove along its circumferential direction; each sealing ring groove has a bottom seal sealing ring, the outer circumferential wall of which seals against the inner circumferential wall of the stirring transmission groove. The positioning protrusion and installation step facilitate the limiting and positioning of the bottom seal, while the engagement of the connecting blocks and connecting grooves secures the bottom seal, and the sealing rings on the sealing ring grooves further enhance the sealing performance of the bottom seal.

[0013] Preferably, a stirring positioning block is fixedly connected to the upper end of the stirring shaft; a stirring rotor is detachably connected to the stirring positioning block; vertically distributed positioning rods are provided on the stirring positioning block; a positioning slot that mates with the stirring positioning block is provided inside the stirring rotor, and the positioning slot has a positioning insertion port that mates with the positioning rods. The stirring rotor rotates synchronously with the stirring shaft through the stirring positioning block. The stirring rotor is installed via a plug-in connection, further improving the ease of assembly and disassembly, thus facilitating disassembly and cleaning.

[0014] Preferably, the powder storage tank has an upwardly protruding cylindrical boss at the center of its bottom; the first connecting part is disposed inside the cylindrical boss, the stirring positioning block is coaxial and rotatably connected above the cylindrical boss, the stirring rotor is sleeved on the stirring positioning block and the cylindrical boss, and the outer peripheral wall of the stirring rotor is provided with a plurality of stirring arms along the circumferential direction; the bottom surface of each stirring arm is sealed and fitted to the bottom of the powder storage tank. The contact between the stirring arms and the bottom of the powder storage tank facilitates better agitation of the milk powder and also facilitates better delivery of the milk powder to the powder inlet.

[0015] Preferably, the container also includes a lid; the lid is detachably mounted on the top of the milk powder container, and the bottom surface of the lid is provided with vertically distributed stirring and positioning posts; after the lid is closed, the lid seals the top of the powder storage tank, and the bottom end of each stirring and positioning post abuts against the top of the stirring rotor, with both the bottom end of the stirring and positioning post and the top end of the stirring rotor being spherical. The lid achieves a seal on the powder storage tank, while the stirring and positioning posts abut against the stirring rotor ensure the stability of the stirring rotor's rotation, thereby ensuring smooth and even stirring of the milk powder.

[0016] In summary, the advantages of this utility model are that the mechanism seals the powder storage tank and the stirring shaft through the upper sealing structure and seals the bottom seal and the stirring shaft through the lower sealing structure, preventing water from flowing into the stirring transmission tank during cleaning and affecting the normal operation of the internal parts. It also makes it convenient to put the entire milk powder box into water for cleaning, improving the convenience of cleaning and use. At the same time, the detachable stirring head makes it easy to disassemble and clean. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the sealing and stirring mechanism used in the milk maker of this utility model.

[0018] Figure 2 yes Figure 1 A magnified view of a portion of the sealing structure.

[0019] Figure 3 This is a schematic diagram of the internal structure of the sealing stirring mechanism of this utility model.

[0020] Figure 4This is an internal exploded view of the sealing stirring mechanism of this utility model.

[0021] Figure 5 This is a schematic diagram of the internal structure of the stirring rotor of this utility model.

[0022] Figure 6 This is a schematic diagram of the internal structure of the milk powder box of this utility model.

[0023] Figure 7 This is a schematic diagram of the bottom of the milk powder box of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Milk powder box; 11. Powder storage tank; 111. Cylindrical boss; 112. Powder inlet; 12. Stirring transmission groove; 121. Groove opening; 122. Mounting step; 123. Connecting block; 13. First connecting part; 131. First stepped hole; 132. Second stepped hole; 133. Third stepped hole; 134. First limiting ring groove; 2. Bottom seal; 20. Connecting groove; 21. Second connecting part; 211. First stepped hole; 212. Second stepped hole; 213. Third stepped hole; 214. Second limiting ring groove; 22. Positioning protrusion; 23. Sealing ring groove; 24. Bottom seal ring; 3. Stirring shaft; 31. Stirring positioning block; 32. Positioning rod; 4. Drive block; 5. Upper sealing structure; 51. Upper oil seal fixing block; 511. First limiting protrusion ring; 52. Upper oil seal; 53. Upper sealing ring; 6. Lower sealing structure; 61. Lower oil seal fixing block; 611. Second limiting protrusion ring; 62. Lower oil seal; 63. Lower sealing ring; 7. Stirring rotor; 70. Stirring arm; 71. Positioning slot; 72. Positioning socket; 8. Cover; 81. Stirring positioning column; 9. Transmission gear. Detailed Implementation

[0026] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0027] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0028] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1 to 7 As shown, a sealing and stirring mechanism for a milk powder maker includes a milk powder box 1, a bottom seal 2, a stirring shaft 3, an upper sealing structure 5, and a lower sealing structure 6. The milk powder box 1 is cylindrical, and its top surface has an upward-opening, cylindrical milk powder storage tank 11. The bottom surface of the milk powder box 1 has a downward-opening, cylindrical stirring transmission groove 12. A first connecting portion 13 for the stirring shaft 3 to pass vertically through is provided between the stirring transmission groove 12 and the milk powder storage tank 11. The bottom seal 2 is fixedly installed at the groove opening 121 of the stirring transmission groove 12 and is sealed to the groove opening 121. A second connecting portion 21 is provided in the middle of the bottom seal 2. The stirring shaft 3 is rotatably connected to the first connecting portion 13, and the upper end of the stirring shaft 3 extends through the first connecting portion 13 into the milk powder storage tank 11. The upper end of the stirring shaft 3 is detachably connected to the first connecting portion 13. A stirring head 7 is connected, which rotates in the powder storage tank 11 to stir the milk powder. The lower end of the stirring shaft 3 passes through the second connecting part 21 of the bottom seal 2 and cooperates with the drive assembly on the machine body to achieve the rotation of the stirring shaft 3. In this embodiment, the drive assembly includes a conventional structure drive block 4, drive plug and drive motor. The drive block 4 is connected to the lower end of the stirring shaft 3. The bottom surface of the drive block 4 has six transmission slots evenly distributed around the circumference. The drive plug is installed on the top of the machine body. The drive plug is provided with a transmission plug that cooperates with the six transmission slots to realize the docking of the drive block 4 and the drive plug. The drive plug is rotated by the drive motor and drives the stirring shaft 3 to rotate through the torque transmission of the drive block 4, thereby driving the stirring head 7 to stir and push the milk powder in the powder storage tank 11. The upper sealing structure 5 is sealed between the stirring shaft 3 and the first connecting part 13; the lower sealing structure 6 is sealed between the stirring shaft 3 and the second connecting part 21. This mechanism seals the powder storage tank 11 and the stirring shaft 3 through the upper sealing structure 5 and seals the bottom seal 2 and the stirring shaft 3 through the lower sealing structure 6, preventing water from flowing into the stirring transmission tank 12 during cleaning and affecting the normal operation of the internal parts. It also makes it convenient to put the entire milk powder box 1 into water for cleaning, improving the convenience of cleaning and use. At the same time, the detachable stirring head 7 makes it easy to disassemble and clean.

[0031] like Figures 1 to 4 As shown, the upper sealing structure 5 includes an upper oil seal fixing block 51, an upper oil seal 52, and an upper sealing ring 53, which are sequentially fitted onto the stirring shaft 3 from bottom to top. The upper oil seal 52 is fixedly limited within the first connecting part 13 by the upper oil seal fixing block 51. The stirring shaft 3 is rotatably fitted within the first connecting part 13 via the upper oil seal 52, and the inner peripheral wall of the upper oil seal 52 is in a sealing fit with the stirring shaft 3, while the outer peripheral wall of the upper oil seal 52 is in a sealing fit with the first connecting part 13. The upper oil seal fixing block 51 limits the upper oil seal 52 and provides a good sealing effect, preventing water from flowing from the first connecting part 13 into the stirring transmission groove 12. The outer peripheral wall of the upper sealing ring 53 is in a sealing fit with the first connecting part 13, and the inner peripheral wall of the upper sealing ring 53 is in a sealing fit with the stirring shaft 3. The upper sealing ring 53 further enhances the sealing effect based on the upper oil seal 52, further ensuring sealing performance and preventing water from entering during cleaning.

[0032] like Figures 1 to 4As shown, the first connecting portion 13 is a circular stepped hole, and the first connecting portion 13 includes a first stepped hole 131, a second stepped hole 132, and a third stepped hole 133 with decreasing diameters from bottom to top; the upper oil seal fixing block 51 is fixedly disposed in the first stepped hole 131, and a first limiting ring groove 134 is provided circumferentially on the inner peripheral wall of the first stepped hole 131, and a first limiting protrusion 511 that cooperates with the first limiting ring groove 134 is provided circumferentially on the outer peripheral wall of the upper oil seal fixing block 51. The first limiting ring groove 134 and the first limiting protrusion 511 that cooperates with the first limiting ring groove 134 are connected by the first limiting ring groove 134 and the first limiting ring groove 134. The first limiting protrusion ring 511 cooperates to position the upper oil seal fixing block 51, so that the top surface of the upper oil seal fixing block 51 abuts against the stepped surface of the first stepped hole 131. At the same time, the outer peripheral wall of the upper oil seal fixing block 51 is sealed with the inner peripheral wall of the first stepped hole 131, and the inner peripheral wall of the upper oil seal fixing block 51 is sealed with the outer peripheral wall of the stirring shaft 3. This can stably and reliably fix the upper oil seal fixing block 51 in the first stepped hole 131, and at the same time achieve a good seal between the upper oil seal fixing block 51 and the first stepped hole 131. The upper oil seal 52 and the upper sealing ring 53 are fixedly positioned within the second stepped hole 132. The outer peripheral walls of the upper oil seal 52 and the upper sealing ring 53 are sealed to the inner peripheral wall of the second stepped hole 132. The inner peripheral walls of the upper oil seal 52 and the upper sealing ring 53 are sealed to the outer peripheral wall of the stirring shaft 3. The bottom surface of the upper oil seal 52 abuts against the top surface of the upper oil seal fixing block 51, and the top surface of the upper sealing ring 53 abuts against the stepped surface of the second stepped hole 132. This allows the upper oil seal 52 and the upper sealing ring 53 to achieve a tight fit under the positioning and limiting of the upper oil seal fixing block 51, further ensuring sealing performance. The stirring shaft 3 is rotatably connected to the third stepped hole 133. The first stepped hole 131 facilitates the engagement with the upper oil seal fixing block 51, and also allows the upper oil seal 52 and the upper sealing ring 53 to be confined within the second stepped hole 132, ensuring the connection and reliability of the upper oil seal fixing block 51, the upper oil seal 52 and the upper sealing ring 53 in the confined and fixed position. It also facilitates the engagement of the upper oil seal 52 and the upper sealing ring 53 with the second stepped hole 132 to achieve a good sealing effect.

[0033] like Figures 1 to 4As shown, in this embodiment, the lower sealing structure 6 has the same structure as the upper sealing structure 5 and is symmetrically distributed. The lower sealing structure 6 and the upper sealing structure 5 achieve the same sealing effect. The lower sealing structure 6 includes a lower oil seal fixing block 61, a lower oil seal 62, and a lower sealing ring 63, which are sequentially fitted onto the stirring shaft 3 from top to bottom. The lower oil seal 62 is fixedly limited on the second connecting part 21 by the lower oil seal fixing block 61. The stirring shaft 3 is rotatably fitted within the second connecting part 21 by the lower oil seal 62, and the inner peripheral wall of the lower oil seal 62 is sealed to the stirring shaft 3, and the outer peripheral wall of the lower oil seal 62 is sealed to the second connecting part 21. The outer peripheral wall of the lower sealing ring 63 is sealed to the second connecting part 21, and the inner peripheral wall of the lower sealing ring 63 is sealed to the stirring shaft 3. The lower oil seal 62 and the lower sealing ring 63 further achieve the sealing effect on the second connecting part 21, preventing water from flowing from the bottom seal 2 into the stirring transmission groove 12 during cleaning.

[0034] like Figures 1 to 4 As shown, the second connecting portion 21 is a circular stepped hole, and the second connecting portion 21 includes a first stepped hole 211, a second stepped hole 212, and a third stepped hole 213 with decreasing diameters from top to bottom; the lower oil seal fixing block 61 is fixedly disposed in the first stepped hole 211, and a second limiting ring groove 214 is provided circumferentially on the inner peripheral wall of the first stepped hole 211; a second limiting protrusion 611 that mates with the second limiting ring groove 214 is provided circumferentially on the lower peripheral wall of the lower oil seal fixing block 61, and the outer peripheral wall of the lower oil seal fixing block 61 is closely fitted with the inner peripheral wall of the first stepped hole 211. The lower oil seal fixing block 61 has an inner peripheral wall that seals with the outer peripheral wall of the stirring shaft 3. The lower oil seal 62 and the lower sealing ring 63 are fixedly limited within the second stepped hole 212, with their outer peripheral walls sealing with the inner peripheral wall of the second stepped hole 212. The inner peripheral walls of the lower oil seal 62 and the lower sealing ring 63 also seal with the outer peripheral wall of the stirring shaft 3. The bottom surface of the lower oil seal 62 abuts against the top surface of the lower oil seal fixing block 61, and the top surface of the lower sealing ring 63 abuts against the stepped surface of the second stepped hole 212. The stirring shaft 3 is rotatably connected to the third stepped hole 213. This structure facilitates better confinement of the lower oil seal fixing block 61, the lower oil seal 62, and the lower sealing ring 63 within the second connecting part 21, further ensuring the sealing effect.

[0035] like Figure 3 , Figure 4 and Figure 7As shown, the stirring transmission tank 12 has a mounting step 122 circumferentially arranged on the opening 121 of the tank; the bottom of the bottom seal 2 has a positioning protrusion 22 circumferentially arranged to cooperate with the mounting step 122. The positioning protrusion 22 and the mounting step 122 facilitate the limiting and positioning of the bottom seal 2, making the installation of the bottom seal 2 convenient. Three connecting blocks 123 are evenly distributed circumferentially on the inner circumferential wall of the stirring transmission tank 12; the outer circumferential wall of the bottom seal 2 has a connecting groove 20 that cooperates with the connecting blocks 123. The cooperation between the connecting blocks 123 and the connecting groove 20 fixes the bottom seal 2, preventing displacement of the bottom seal 2 during transmission operation, and thus preventing water from flowing into the interior of the bottom seal 2 during cleaning. At least one sealing ring groove 23 is provided circumferentially on the outer circumferential wall of the bottom seal 2; the number of sealing ring grooves 23 is designed according to the actual sealing conditions. In this embodiment, there are two sealing ring grooves 23, and the two sealing ring grooves 23 are axially spaced. Each sealing ring groove 23 is provided with a bottom seal ring 24, the outer peripheral wall of which is in sealing fit with the inner peripheral wall of the stirring transmission groove 12. The bottom seal ring 24 on the sealing ring groove 23 further enhances the sealing effect of the bottom seal 2, ensuring sealing performance during cleaning.

[0036] like Figures 1 to 6 As shown, a stirring positioning block 31 is fixedly connected to the upper end of the stirring shaft 3 by screws. The stirring positioning block 31 is hollow and stepped, and its diameter decreases from bottom to top. The stepped shape facilitates better positioning and engagement with the stirring rotor 7, ensuring transmission efficiency. Vertically distributed positioning rods 32 are provided on the central cylindrical top surface of the stirring positioning block 31. The stirring rotor 7 has a positioning slot 71 that mates with the stirring positioning block 31, and the positioning slot 71 has a positioning insertion port 72 that mates with the positioning rods 32. The stirring rotor 7 achieves synchronous rotation with the stirring shaft 3 through the stirring positioning block 31. The stirring rotor 7 is installed by plugging in the stirring block, further improving the convenience of assembly and disassembly, thus facilitating disassembly and cleaning. A cylindrical boss 111 protruding upward is provided at the center of the bottom of the powder storage tank 11; the first connecting part 13 is provided inside the cylindrical boss 111, saving installation space, and at the same time, it can support the stirring head 7. The stirring positioning block 31 is coaxial and rotatably connected above the cylindrical boss 111. The stirring head 7 is sleeved on the stirring positioning block 31 and the cylindrical boss 111. The bottom surface of the stirring head 7 is in contact with the bottom of the powder storage tank 11. Four stirring arms 70 are provided circumferentially on the outer peripheral wall of the bottom of the stirring head 7. The bottom surface of each stirring arm 70 is in contact with the bottom of the powder storage tank 11, and the bottom of the powder storage tank 11 is provided with a powder inlet 112 for conveying milk powder. The detachable stirring head 7 facilitates disassembly and assembly, making cleaning easier. Meanwhile, the stirring arm 70 fits snugly against the bottom of the powder storage tank 11, allowing for better stirring of the milk powder and easier delivery of the milk powder to the powder inlet 112, thus improving the accuracy of powder feeding.

[0037] like Figure 1 and Figure 6 As shown, it also includes a lid 8; the lid 8 is detachably installed on the top of the milk powder box 1, and the bottom surface of the lid 8 is provided with vertically distributed stirring positioning columns 81; after the lid 8 is closed, the lid 8 seals the top of the powder storage tank 11, and the bottom end of the stirring positioning column 81 abuts against the top end of the stirring rotor 7, and both the bottom end of the stirring positioning column 81 and the top end of the stirring rotor 7 are spherical. The lid 8 achieves the sealing of the powder storage tank 11, and at the same time, the stirring positioning column 81 abuts against the stirring rotor 7 to ensure the rotational stability of the stirring rotor 7, thereby ensuring the smoothness and fluidity of stirring the milk powder.

[0038] like Figures 1 to 4 As shown, a transmission gear 9 is connected to the stirring shaft 3 between the upper sealing structure 5 and the lower sealing structure 6. A powder feeding chamber is provided inside the milk powder box 1 on one side of the stirring transmission groove 12. A powder feeding screw is rotatably connected inside the powder feeding chamber. One end of the powder feeding screw extends through the powder feeding chamber into the stirring transmission groove 12, and a screw gear is connected to the end of the powder feeding screw. The transmission gear 9 meshes with the screw gear to achieve transmission, so that while the stirring shaft 3 is rotating and stirring, it is also convenient to drive the powder feeding screw to rotate and send the milk powder into the milk powder mixing chamber.

[0039] The advantages of this utility model are that the mechanism seals the powder storage tank 11 and the stirring shaft 3 through the upper sealing structure 5 and seals the bottom seal 2 and the stirring shaft 3 through the lower sealing structure 6. The double sealing effect prevents water from flowing into the stirring transmission tank 12 during cleaning and affecting the normal operation of the internal parts. It is convenient to put the entire milk powder box 1 into water for cleaning, which improves the convenience of cleaning and use. At the same time, the detachable stirring head 7 makes it easy to disassemble and clean.

[0040] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0041] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A sealed stirring mechanism for a milk maker, characterized in that, Includes a milk powder box (1), a bottom seal (2), and a stirring shaft (3); the top surface of the milk powder box (1) is provided with a powder storage tank (11); the bottom surface of the milk powder box (1) is provided with a stirring transmission groove (12); a first connecting part (13) is provided between the stirring transmission groove (12) and the powder storage tank (11); the bottom seal (2) is sealed in the stirring transmission groove (12); a second connecting part (21) is provided on the bottom seal (2) and is coaxially distributed with the first connecting part (13); the upper part of the stirring shaft (3) is rotatably connected to the first connecting part (13). 13) and an upper sealing structure (5) is provided between the stirring shaft (3) and the first connecting part (13); the upper end of the stirring shaft (3) extends through the first connecting part (13) into the powder storage tank (11); the lower part of the stirring shaft (3) is rotatably connected to the second connecting part (21), and a lower sealing structure (6) is provided between the stirring shaft (3) and the second connecting part (21); the lower end of the stirring shaft (3) passes through the second connecting part (21) and cooperates with the drive assembly on the machine body to realize the rotation of the stirring shaft (3).

2. The sealed stirring mechanism for a milk maker according to claim 1, characterized in that, The upper sealing structure (5) includes an upper oil seal (52) sleeved on the stirring shaft (3); the upper oil seal (52) is limited within the first connecting part (13), the stirring shaft (3) is rotatably fitted within the first connecting part (13) through the upper oil seal (52), and the inner peripheral wall of the upper oil seal (52) is sealed to the stirring shaft (3), and the outer peripheral wall of the upper oil seal (52) is sealed to the first connecting part (13).

3. The sealed stirring mechanism for a milk maker according to claim 2, characterized in that, The upper sealing structure (5) further includes an upper oil seal fixing block (51) sleeved on the stirring shaft (3); the upper oil seal (52) is fixedly limited in the first connecting part (13) by the upper oil seal fixing block (51), the upper oil seal fixing block (51) is limited in the first connecting part (13), and the outer peripheral wall of the upper oil seal fixing block (51) is sealed to the inner peripheral wall of the first connecting part (13), and the inner peripheral wall of the upper oil seal fixing block (51) is sealed to the stirring shaft (3).

4. The sealed stirring mechanism for a milk maker according to claim 3, characterized in that, The upper sealing structure (5) also includes an upper sealing ring (53). The upper oil seal fixing block (51), upper oil seal (52) and upper sealing ring (53) are sequentially sleeved on the stirring shaft (3) from bottom to top. The outer peripheral wall of the upper sealing ring (53) is sealed to the first connecting part (13), and the inner peripheral wall of the upper sealing ring (53) is sealed to the stirring shaft (3). The lower sealing structure (6) has the same structure as the upper sealing structure (5) and is symmetrically arranged.

5. The sealed stirring mechanism for a milk maker according to claim 4, characterized in that, The first connecting part (13) is in the shape of a circular stepped hole, and the first connecting part (13) includes a first stepped hole (131), a second stepped hole (132) and a third stepped hole (133) with the hole diameter decreasing from bottom to top; the upper oil seal fixing block (51) is fixedly installed in the first stepped hole (131), and a first limiting ring groove (134) is provided circumferentially on the inner peripheral wall of the first stepped hole (131); a first limiting protrusion (511) that cooperates with the first limiting ring groove (134) is provided circumferentially on the outer peripheral wall of the upper oil seal fixing block (51), and the outer peripheral wall of the upper oil seal fixing block (51) is sealed to the inner peripheral wall of the first stepped hole (131). The inner peripheral wall of the upper oil seal fixing block (51) is sealed to the outer peripheral wall of the stirring shaft (3); the upper oil seal (52) and the upper sealing ring (53) are fixedly limited in the second stepped hole (132), the outer peripheral wall of the upper oil seal (52) and the upper sealing ring (53) is sealed to the inner peripheral wall of the second stepped hole (132); the inner peripheral wall of the upper oil seal (52) and the upper sealing ring (53) is sealed to the outer peripheral wall of the stirring shaft (3); the bottom surface of the upper oil seal (52) abuts against the top surface of the upper oil seal fixing block (51), the top surface of the upper sealing ring (53) abuts against the stepped surface of the second stepped hole (132), and the stirring shaft (3) is rotatably connected to the third stepped hole (133).

6. The sealed stirring mechanism for a milk maker according to claim 1, characterized in that, The lower sealing structure (6) includes a lower oil seal (62) sleeved on the stirring shaft (3); the lower oil seal (62) is limited within the second connecting part (21), the stirring shaft (3) is rotatably fitted within the second connecting part (21) through the lower oil seal (62), and the inner peripheral wall of the lower oil seal (62) is sealed to the stirring shaft (3), and the outer peripheral wall of the lower oil seal (62) is sealed to the second connecting part (21).

7. The sealed stirring mechanism for a milk maker according to claim 1, characterized in that, The stirring transmission groove (12) has an installation step (122) circumferentially arranged on the groove opening (121); the bottom seal (2) has a positioning protrusion (22) circumferentially arranged on the bottom to position and cooperate with the installation step (122); the inner peripheral wall of the stirring transmission groove (12) has a plurality of connecting blocks (123) circumferentially arranged on the inner peripheral wall; the outer peripheral wall of the bottom seal (2) has a connecting groove (20) circumferentially arranged to cooperate with the connecting blocks (123); the outer peripheral wall of the bottom seal (2) has at least one sealing ring groove (23) circumferentially arranged on the outer peripheral wall; each sealing ring groove (23) is provided with a bottom seal sealing ring (24), and the outer peripheral wall of the bottom seal sealing ring (24) is sealed and cooperated with the inner peripheral wall of the stirring transmission groove (12).

8. The sealed stirring mechanism for a milk maker according to claim 1, characterized in that, The upper end of the stirring shaft (3) is fixedly connected to a stirring positioning block (31); the stirring positioning block (31) is detachably connected to a stirring head (7); the stirring positioning block (31) is provided with vertically distributed positioning rods (32); the stirring head (7) is provided with a positioning slot (71) that cooperates with the stirring positioning block (31), and the positioning slot (71) is provided with a positioning socket (72) that cooperates with the positioning rod (32). The stirring head (7) achieves synchronous rotation with the stirring shaft (3) through the stirring positioning block (31).

9. The sealed stirring mechanism for a milk maker according to claim 8, characterized in that, The powder storage tank (11) has an upwardly protruding cylindrical boss (111) at the center of its bottom; the first connecting part (13) is located inside the cylindrical boss (111); the stirring positioning block (31) is coaxial and rotatably connected above the cylindrical boss (111); the stirring rotor (7) is sleeved on the stirring positioning block (31) and the cylindrical boss (111); the outer peripheral wall of the stirring rotor (7) is provided with a plurality of stirring arms (70) along the circumferential direction; the bottom surface of each stirring arm (70) is sealed and fitted to the bottom of the powder storage tank (11).

10. The sealed stirring mechanism for a milk maker according to claim 1, characterized in that, It also includes a lid (8); the lid (8) is detachably installed on the top of the milk powder box (1), and the bottom surface of the lid (8) is provided with vertically distributed stirring positioning columns (81); after the lid (8) is closed, the lid (8) seals the top of the powder storage tank (11), the bottom end of the stirring positioning column (81) abuts against the top end of the stirring rotor (7), and the bottom end of the stirring positioning column (81) and the top end of the stirring rotor (7) are both spherical.

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